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WO2017011783A1 - Dispositifs de flottaison personnel gonflables au gaz - Google Patents

Dispositifs de flottaison personnel gonflables au gaz Download PDF

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Publication number
WO2017011783A1
WO2017011783A1 PCT/US2016/042593 US2016042593W WO2017011783A1 WO 2017011783 A1 WO2017011783 A1 WO 2017011783A1 US 2016042593 W US2016042593 W US 2016042593W WO 2017011783 A1 WO2017011783 A1 WO 2017011783A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
generating component
garment
bladder
user
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2016/042593
Other languages
English (en)
Inventor
Aydin Kemal SUNOL
Evan James TICKNOR
Selina Kyle GUARDIANO
Timothy Warren JACOBSON
Everett David ROGERS
Kyle Louis COGSWELL
Robert Dana FRISINA
Christopher Lawrence PASSAGLIA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of South Florida
University of South Florida St Petersburg
Original Assignee
University of South Florida
University of South Florida St Petersburg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of South Florida, University of South Florida St Petersburg filed Critical University of South Florida
Priority to US15/744,477 priority Critical patent/US10414475B2/en
Publication of WO2017011783A1 publication Critical patent/WO2017011783A1/fr
Anticipated expiration legal-status Critical
Priority to US16/520,581 priority patent/US11001353B2/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • B63C9/18—Inflatable equipment characterised by the gas-generating or inflation device
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D7/00—Bathing gowns; Swim-suits, drawers, or trunks; Beach suits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/40—Detecting, measuring or recording for evaluating the nervous system
    • A61B5/4076—Diagnosing or monitoring particular conditions of the nervous system
    • A61B5/4094—Diagnosing or monitoring seizure diseases, e.g. epilepsy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • B63C9/11—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses
    • B63C9/125—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses having gas-filled compartments
    • B63C9/1255—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like covering the torso, e.g. harnesses having gas-filled compartments inflatable

Definitions

  • swimming and water sports are very popular activities. Many people are unable to participate in these activities, however, due to medical conditions, such as epilepsy and other neurological conditions, which put them at risk of drowning. While such individuals could wear conventional flotation devices, such as foam vests or inflated vests or arm cuffs, such devices interfere with water activities. For example, such devices are typically cumbersome and hinder body motion, and further make swimming difficult, particularly under water. While inflatable vests, such as those that use carbon dioxide cartridges, are available on the market, they must be manually activated to inflate. Unfortunately, the user may not be able to activate the vest when the user is experiencing a medical emergency, such as a seizure.
  • a medical emergency such as a seizure.
  • a personal flotation device that can provide buoyancy to an individual experiencing a medical event, such as a seizure, which does not interfere with normal water activity in which the individual is participating and which does not require the individual to activate.
  • Fig. 1 is a block diagram of an embodiment of a flotation device.
  • Fig. 2 is a graph that plots motor neuron action potential activity of a subject as sample point versus signal strength (mV).
  • Fig. 3 is a histogram that shows the frequency at which local maxima in the data of Fig. 2 reached amplitude thresholds.
  • Fig. 4A is a data set for a first subject comprising a graph that plots the subject's motor neuron action potential activity and a table that identifies detected seizures.
  • Fig. 4B is a data set for a second subject comprising a graph that plots the subject's motor neuron action potential activity and a table that identifies detected seizures.
  • Fig. 5 is a graph that plots heat versus time for a gas-generating reaction.
  • Fig. 6 is an illustration of an example of a graphical method for solving the kinetics of the reaction of Fig. 5.
  • Figs. 7A-7C are drawings of an embodiment of a gas-generating component in various stages of activation.
  • Figs. 8A and 8B are front and back views, respectively, of an embodiment of a swimming garment that incorporates a flotation device.
  • a personal flotation device that can provide buoyancy to an individual experiencing a medical event, such as an epileptic seizure, which does not interfere with normal water activity in which the individual is participating and which does not require the individual to activate.
  • a medical event such as an epileptic seizure
  • the personal flotation device comprises an inflatable bladder that can be inflated by an inflation system under the control of an inflation control system.
  • the inflation system uses a chemical reaction to generate gas that rapidly fills the bladder to provide buoyancy to the user.
  • the inflation control system automatically activates the inflation system in response to a determination that the user is having a medical event, such as an epileptic seizure. In some embodiments, this determination is made by sensing and analyzing skeletal muscle contractions of the user.
  • Fig. 1 illustrates the primary components of a personal flotation device 10 that can be worn by a user.
  • the flotation device 10 can be used as an independent device separate from a swimming garment.
  • the flotation device 10 can be used with a swimming garment, such as a swimming shirt. In the latter case, the flotation device 10 can be integrated into the garment during its manufacture or added to the garment afterward in a retrofitting scenario.
  • the flotation device 10 generally comprises an inflation system 12 and an inflation control system 14.
  • the inflation system 12 includes an inflatable bladder 16 that can be rapidly filled with a gas to provide buoyancy to the device user.
  • the gas that fills the bladder 16 is produced by a gas-generating component 18.
  • the gas-generating component 18 can, in some embodiments, generate gas through a chemical reaction that occurs when the gas- generating component is activated by a gas-generating component actuator 20.
  • the inflation control system 14 includes one or more sensors 22 that can be used to sense one or more physiological parameters of the user that can be indicative of a medical event that places the user at risk of drowning.
  • the sensors 22 can, in some embodiments, comprise electrodes that are placed on the user's skin on particular parts of the body and used to sense the user's muscle contractions.
  • the sensors 22 are in electrical communication with a central controller 24 of the flotation device 10 that is used to control activation of the actuator 20. More particularly, the central controller 24 is configured to activate the actuator 20 when the parameters sensed by the sensors 22 are indicative of a medical event occurring.
  • the central controller 24 can include a microprocessor 26, memory 28 (which can optionally be integrated into the microprocessor), and a battery 32.
  • a control program 30 Stored within the memory 28 (a non-transitory computer-readable medium) is a control program 30 that can be executed by the microprocessor 26 to determine when the actuator 20 should be activated.
  • the control program 30 comprises one or more algorithms (computer logic and executable instructions) configured to analyze the data collected by the sensors 22 and determine whether or not a medical event is occurring. If it is determined that such a medical event is occurring, the microprocessor 26 can send a signal to the gas-generating component actuator 20 to activate it and cause the gas-generating component 20 to inflate the bladder 16.
  • the flotation device 10 can be specifically configured for use by persons who have epilepsy and, therefore, suffer from epileptic seizures that put them at risk of drowning when participating in water activities.
  • the device 10 can be configured to detect the onset of an epileptic seizure and, in response, immediately inflate to prevent drowning.
  • One way in which such seizures can be detected is by capturing and analyzing electromyography (EMG) signals from the user's muscles. EMG signals measure the motor neuron action potential in skeletal muscles. Because seizures involve involuntary strong and rapid contractions of the skeletal muscles that do not normally occur during normal movement or exercise, signals that identify such contractions can provide an indication of when the user is having a seizure.
  • EMG electromyography
  • the EMG signals can be collected with the sensors 22, in the form of EMG electrodes that are placed on the skin surface. These signals can be provided to the central controller 24 and analyzed by executing the control program 30, which can be specifically configured to identify contractions indicative of an epileptic seizure.
  • EMG signals obtained from the pectoralis major and bicep muscles provide signals that most clearly identify the seizure-like contractions. After these initial findings, additional testing was performed with a focus on these targeted areas.
  • each peak value contained its peak size and location in the data set. From these location values, a new variable pkint (peak interval) was created by finding the separation between peak locations. An additional value of zero was added to the beginning of the data set for general indexing and matrix formatting purposes.
  • a two-columned warning matrix was formed to dictate whether an area of the overall data set would begin to indicate a seizure occurring. This was determined by piecing together a picture of each data point and the area previous to said data point. During each iteration of the program, an average was taken for each new data point that includes the previous nine values. This average represents the average separation between peaks above the minimum envelope over a set of ten peaks. A logic operator was used to determine if the average of each set was less than 250 data points per peak. If the average was less than 250, a value of 1 was assigned to the corresponding data point. Otherwise, the data point was assigned a 0.
  • the initiate variable is a counter that indicates to the device to initiate the inflation sequence. Each time a warning value is assessed a value of 1 , the initiate counter increases by 1 . In the case that the warning value is a 0, the initiate counter is decreased by 1 . The counter cannot fall below the value 0. In the event that the counter reaches a value of 5, the counter resets and an inflate determination is reached.
  • Figs. 4A and 4B illustrate two data sets from two different test subjects, respectively, and show the capability of the program.
  • the first data set (Fig. 4A) shows a very visible distinction between swimming motions, a baseline, and a seizure.
  • the second data set (Fig. 4B) shows activities performed that are less distinguishable from one to another.
  • the control program 30 can be configured to analyze EMG signals collected by the sensors 22 and determine from the amplitude and frequency of those signals whether or not the user is having an epileptic seizure. For example, if a threshold number of contractions that exceed a predetermined amplitude threshold are detected within a predetermined period of time, it can be concluded that the user is having a seizure. In such a case, the microprocessor 26 can activate the actuator 20 to cause the gas- generating component 18 to fill the bladder 16 with gas.
  • the flotation device 10 can be specifically calibrated for each particular user.
  • a calibration process can be performed during which the user performs particular physical activities while the flotation is connected to the body to enable the central controller 24 to store data in memory 28 that will be used in the seizure determination.
  • These activities serve as a safe means to accurately calibrate the controller 24 to each individual user.
  • the activities can be conducted out of the water and comprise mimicking freestyle swimming, mimicking breast-stroke, mimicking treading water, full-body tensing (to calibrate maximal voluntary contraction), and sitting in a relaxed position (to calibrate baseline muscle activity).
  • the gas-generating component 18 can generate gas through a chemical reaction.
  • the chemical reaction can utilize a hydrogen-generating compound that generates hydrogen gas.
  • a hydrogen-generating compound is calcium hydride (CaH 2 ), which reacts with water to create calcium oxide and hydrogen gas:
  • the kinetics of the calcium hydride/water reaction was investigated. Calculations were performed to determine the water requirements to properly feed the reaction. An experimental amount of approximately 0.1 gram calcium hydride was mixed with water in four trials. Two trials were performed at 25°C and two trials were performed at 30°C. The two trials performed at the same temperatures had different amounts of calcium hydride on the order of +/- 0.025 grams approximately. Calcium hydride was placed in a small reaction vial, which was lowered into a calorimeter. The calorimeter reached steady state conditions and proper temperature values. Next, 3 grams of distilled water (3 ml_) was injected into the reaction vial. In order to minimize pressure build up, a vent was placed in the top of the reaction vial to vent the hydrogen gas. Once the water was injected, the reaction was monitored until values returned to the steady state conditions of the system. With the four trials completed, kinetic data was calculated for the reaction of calcium hydride with water.
  • Fig. 5 shows the results from the calorimeter testing performed at 25°C with 0.12 gm of calcium hydride reacting.
  • Fig. 6 shows an example of a graphical method for solving the kinetics.
  • Table 1 shows the k values calculated for each trial and the time it took for each trial to reach 95% conversion. Based on the information gathered from experimentation, the average k value 0.576 min "1 .
  • the reaction is pseudo-first order due to the excess water utilized to quench the reaction. The results of testing suggest that the reaction is highly independent of temperature and therefore has low activation energy. The time for the reaction to occur was minimal. This experimentation confirmed that calcium hydride is a viable option for use in the gas-generating component 18 and for inflation of the bladder 16.
  • the flotation device 10 In addition to providing buoyancy to the user, the flotation device 10 must also not harm the user.
  • the amount of calcium hydride needed for inflation can be calculated from the amount of pressure of hydrogen gas required to provide buoyancy to the user.
  • 34 Ibf of buoyancy is provided to comply with U.S. Coast Guard life jacket standards. In such a case, approximately 5 gm of calcium hydride is needed. An amount of water in excess of that needed for the reaction can be used to quench the reaction and absorb much of the generated heat.
  • Hydrogen has a very low heat capacity. It therefore is not likely to carry much of the heat produced by the reaction that occurs in the gas-generating component 18 into the bladder 16. However, if a significant amount of steam, which has a much higher heat capacity, is produced, this steam could carry a significant amount of heat into the bladder 16. Assuming the final quality of the system is approximately 1 1 %, about 0.3 moles of water would be turned into steam. However, the drastic change in volume that would occur during filling of the bladder 16 would cause most, if not all, of the steam to condense. Therefore, the heat of the reaction is less of a concern for the bladder 16.
  • Figs. 7A-7C illustrate an embodiment of a gas-generating component 40 that can be used in the flotation device 10.
  • the component 40 comprises a sealed, rigid outer housing 42 that defines an interior space that is divided into a first compartment 44 and a second compartment 46 by a divider wall 48.
  • the housing 42 is made of a polymeric material having good heat insulating properties, such as polycarbonate.
  • the housing 42 can have dimensions that enable the gas-generating component 40 to be unobtrusive to the user when participating in water activities.
  • the two compartments 44, 46 are configured to contain water and a gas-generating compound (e.g. , calcium hydride), respectively, in amounts appropriate for generating a volume of gas that will rapidly fill the bladder.
  • a gas-generating compound e.g. , calcium hydride
  • the divider wall 48 incorporates a first sacrificial element 50 that will break when a predetermined amount of pressure is applied to the portion to enable the water and the gas-generating compound to mix.
  • the sacrificial element 50 can comprise a weak point in the wall or a relatively weak member, such as a thin membrane, that is incorporated into the wall.
  • the gas-generating component 40 further includes an exit nozzle 52 through which gas generated by the reaction between the water and the gas-generating compound can escape the component and be injected into the bladder 16.
  • a second sacrificial element 54 such as a thin membrane, separates the nozzle 52 from the second compartment 46. This sacrificial element 54 is designed to break a when the generated gas applies a predetermined amount of pressure.
  • the nozzle 52 includes a filter 56 that prevents the sacrificial elements 50, 54 and the reactants from passing into the bladder 16.
  • the gas-generating component 40 is activated by the gas-generating component actuator 20.
  • the actuator 20 applies pressure to the water contained in the first compartment 44. As illustrated in Fig. 7B, this pressure can be applied, for example, using a piston 58 that is driven into the gas-generating component 18 by the actuator 20. This pressure is transferred by the water to the first sacrificial element 50 so as to cause it to break or detach from the divider wall 48, as shown in Fig. 7B.
  • the water enters the second compartment 46 and mixes with the gas-generating compound contained therein.
  • the water and the gas-generating compound react with each other and rapidly produce a substantial volume of gas, such as hydrogen gas.
  • this gas exerts pressure on the second sacrificial element 54 to cause it to break, as shown in Fig. 7C. This enables the gas to escape the second compartment 46 and the gas- generating component 40, and inflate the bladder 16.
  • the gas-generating component 18 While a particular physical configuration for the gas-generating component 18 has been illustrated in Fig. 7 and described above, it is noted that the physical details of this configuration are not critical. Instead, the functionality provided by the component 18 (i.e., separately containing water and a gas-generating compound, enabling the water and gas-generating compound to mix, and enabling gas generated from the reaction between the water and gas-generating compound to fill the bladder 16) is was is important. Accordingly, it will be appreciated that any physical configuration that can provide such functionality can be used for the gas- generating component 18.
  • the flotation device 10 can be integrated with a swimming garment, such as a swimming shirt.
  • Figs. 8A and 8B illustrate an embodiment of such a shirt 60.
  • the shirt 60 generally comprises a body 62 and sleeves 64 that are attached to the body.
  • the shirt body 62 is generally configured to cover the user's torso, while the shirt sleeves 64 are generally configured to cover the user's upper arms. While short sleeves are illustrated in Figs. 8A and 8B, it is noted that the sleeves 64 can alternatively be long sleeves that cover the user's entire arms.
  • the body 62 and sleeves 64 can be made of any suitable materials. In some embodiments, they are made of synthetic elastic materials that do not interfere with the user's mobility while worn in the water.
  • the body 62 and sleeves 64 can be made of a neoprene material, which can be approximately 1 to 2 mm thick.
  • neoprene the shirt 60 inherently provides insulation to the user from the heat generated by the flotation device 10.
  • the shirt 60 incorporates the various components of the flotation device 10. These components include an inflatable bladder 66.
  • the bladder 66 has a yoke-like design in which the bladder comprises a continuous, elongated, tubular element that extends around the back of the shirt collar 68 (see Fig. 8B) and down the front of the shirt 60 on both sides of the user's body (see Fig. 8A).
  • the bladder 66 has a neck portion 70 that extends from one lateral side of the collar 68, around the back of the collar, and to the other lateral side of the collar, and two opposed elongated torso portions 72 that each extends down from the neck portion along the front of the shirt 60 so as to extend across the user's chest and stomach on either side of the user's sagittal plane when the shirt is worn.
  • the bladder 66 can be made of polyurethane coated nylon.
  • the bladder 66 can be integrated into the material of the shirt body 62.
  • the bladder 66 can be sewn into an internal pocket formed in the shirt body 62 so as to be inconspicuous and hydrodynamic.
  • the shirt 60 also includes one or more sensors 74 that are placed at strategic positions within the shirt. More particularly, the shirt 60 includes one sensor 74 incorporated into each shirt sleeve 64 at a position at which they will overlie the biceps muscles when the shirt is worn, and two sensors 74 incorporated into the shirt body 62 at positions at which they will overlie the pectoralis muscles when the shirt is worn.
  • Each sensor 62 can comprise an EMG electrode that is affixed (e.g., sewn or glued) to the interior surface of the shirt 62 such that the sensor can make direct contact with the skin of the user.
  • each sensor 62 can comprise a waterproof foam/gel surface electrode.
  • each sensor 74 Connected to each sensor 74 is an electrical conductor 76, such as an insulated metal wire, that extends from the sensor to the back of the shirt 60 and a central controller 78, which is integrated therewith.
  • the central controller 78 can be can be sewn into an internal pocket formed in the shirt body 62 so as to be inconspicuous and hydrodynamic.
  • this central controller 78 can comprise the microprocessor 26, memory 28, and battery 32.
  • the central controller 78 is integrated with the shirt body 62 so as to be positioned at the middle or upper back of the user when the shirt is worn.
  • the gas-generating component 80 and the gas-generating component actuator 82 are integrated with the back of the shirt body 62 and the gas-generating component actuator 82, which is in electrical communication with the central controller 78.
  • the gas-generating component 80 is coupled to the bladder 66 such that the gas generated within the component is ejected into the bladder when it is activated by the actuator 82 under the control of the central controller 78.
  • the gas-generating component 80 and the gas-generating component actuator 82 can be can be sewn into internal pockets formed in the shirt body 62 so as to be inconspicuous and hydrodynamic. In at least the case of the pocket used to contain the gas-generating component 80, the pocket can be opened and closed by the user to remove and replace the gas-generating component once it has been used.
  • the shirt 60 and its flotation device can include manual controls that enable the user to determine when the bladder 66 is or is not inflated.
  • an inflation activation button 84 and an inflation cancelation button 86 can be provided on the exterior of the front of the shirt 60 and electrically connected to the central controller 78 with an electrical conductor 88.
  • the activation button 84 can be pressed by the user to activate the actuator 82 and inflate the bladder 66.
  • the inflation device of the shirt 60 can be activated by the user when he or she feels a seizure coming on. More generally, however, the inflation device of the shirt 60 can be used by anyone who wishes to use a manually activated flotation device.
  • the cancelation button 86 When the cancelation button 86 is provided, it can be pressed by the user to prevent activation of the actuator 82 and inflation of the bladder 66.
  • the inflation device can incorporate an auditory and/or vibratory alarm that is activated by the central controller 78 when it determines that the user is having a seizure.
  • the central controller 78 can be configured to delay activation of the actuator 82 for a few seconds after the alarm is initiated, however, to provide the user with an opportunity to override inflation of the bladder 66 in cases in which the user is not actually experiencing a seizure (i.e., a false positive determination has been made by the controller).

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Neurology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Neurosurgery (AREA)
  • Physiology (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un dispositif de flottaison personnel pouvant être porté par un utilisateur comportant un système de gonflage comprenant une vessie gonflable et un composant de génération de gaz, le composant de génération de gaz étant configuré pour générer du gaz au moyen d'une réaction chimique et injecter le gaz généré dans la vessie pour gonfler celle-ci, et un système de commande de gonflage configuré pour commander l'activation du composant de génération de gaz.
PCT/US2016/042593 2015-07-15 2016-07-15 Dispositifs de flottaison personnel gonflables au gaz Ceased WO2017011783A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/744,477 US10414475B2 (en) 2015-07-15 2016-07-15 Gas-inflatable personal flotation devices
US16/520,581 US11001353B2 (en) 2015-07-15 2019-07-24 Gas-inflatable personal flotation devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562192841P 2015-07-15 2015-07-15
US62/192,841 2015-07-15

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US15/744,477 A-371-Of-International US10414475B2 (en) 2015-07-15 2016-07-15 Gas-inflatable personal flotation devices
US16/520,581 Continuation US11001353B2 (en) 2015-07-15 2019-07-24 Gas-inflatable personal flotation devices

Publications (1)

Publication Number Publication Date
WO2017011783A1 true WO2017011783A1 (fr) 2017-01-19

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PCT/US2016/042593 Ceased WO2017011783A1 (fr) 2015-07-15 2016-07-15 Dispositifs de flottaison personnel gonflables au gaz

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WO (1) WO2017011783A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146368A1 (fr) * 2017-02-09 2018-08-16 Universidad Autónoma de Madrid Vêtement de bain de survie intelligent
WO2019106677A1 (fr) * 2017-11-29 2019-06-06 Sea-Ark Technologies Ltd Dispositif de flottaison d'urgence comprenant une chambre de réaction chimique
WO2022254068A1 (fr) * 2021-06-03 2022-12-08 Antonio Montalvo Guerrero Gilet de sauvetage
WO2023131942A1 (fr) * 2022-01-05 2023-07-13 Neomare Ltd. Dispositif de flottaison gonflable pouvant être porté

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Publication number Priority date Publication date Assignee Title
US10589828B1 (en) * 2018-09-20 2020-03-17 Jordan Denning Sexton Self-inflating personal floatation device (“SIPFD”)
JP7253469B2 (ja) * 2019-07-26 2023-04-06 富士フイルムヘルスケア株式会社 超音波ｃｔ装置、超音波ｃｔ装置用容器、および、乳房撮像方法
US12268256B1 (en) * 2019-09-17 2025-04-08 B J Zarcone Wearable fogging apparatus
KR102179064B1 (ko) * 2019-11-13 2020-11-16 주식회사 엑시아머티리얼스 수상 구조 재킷용 스마트 발포 모듈, 이를 구비한 수상 구조 재킷, 그리고 수상 구조 재킷용 스마트 발포 모듈의 제어 방법
US12291317B2 (en) * 2021-12-09 2025-05-06 Timothy D. Wilson System and method for controlled horizontal buoyancy
US11975809B2 (en) * 2022-08-30 2024-05-07 Joseph Jefferson Keever Pop up vest

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US11001353B2 (en) 2021-05-11
US10414475B2 (en) 2019-09-17
US20180229822A1 (en) 2018-08-16

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